Chemically grafting nanoscale UIO-66 onto polypyrrole nanotubes for long-life lithium–sulfur batteries

Abstract

A versatile strategy for a facile approach to chemical graft MOFs onto polypyrrole nanotubes (PPyNTs@MOFs) is designed and fabricated rationally by means of 1,4-dibromobutane linkage. Various MOFs arranged randomly close-packed on PPyNTs, including Co²⁺, Cu²⁺, Zn²⁺, Mn²⁺, Fe³⁺, Al³⁺, Ti⁴⁺, Cr⁴⁺, Zr⁴⁺ and V⁴⁺, have been synthesized successfully. The as-prepared PPyNT@UIO-66 hybrids, used as a cathode carrier, exhibit excellent cyclic stability in Li-S batteries via strong physical and chemical adsorption/affinity with polysulfides.